202105427 has 2 divisors, whose sum is σ = 202105428. Its totient is φ = 202105426.

The previous prime is 202105411. The next prime is 202105429. The reversal of 202105427 is 724501202.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 202105427 - 2⁴ = 202105411 is a prime.

Together with 202105429, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (202105429) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 101052713 + 101052714.

It is an arithmetic number, because the mean of its divisors is an integer number (101052714).

Almost surely, 2^202105427 is an apocalyptic number.

202105427 is a deficient number, since it is larger than the sum of its proper divisors (1).

202105427 is an equidigital number, since it uses as much as digits as its factorization.

202105427 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1120, while the sum is 23.

The square root of 202105427 is about 14216.3788286610. The cubic root of 202105427 is about 586.8484905099.

Adding to 202105427 its reverse (724501202), we get a palindrome (926606629).

The spelling of 202105427 in words is "two hundred two million, one hundred five thousand, four hundred twenty-seven".